KEF Reference 1 Meta Ultimate HiFi Bookshelf Speakers

The benchmark of bookshelf speakers **Priced as a matched pair. The Reference 1 Meta boasts KEF’s 12th generation Uni-Q® driver array with MAT™. Reference 1 Meta is capable of delivering expansive, high-performance sound that goes way beyond what its relatively compact size would suggest was possible. Design Three-way bass reflex Drive units Uni-Q driver array:HF: 25 mm (1 in.) aluminum dome with MATMF: 125 mm (5 in.) aluminum coneBass units:LF: 165 mm (6.5 in.) aluminum cone Frequency range free field (-6dB) Short port: 40Hz -45kHzLong port: 37Hz - 45kHz Frequency range typical in room bass response (-6dB) 30Hz Frequency response (±3dB) 45Hz – 35kHz Crossover frequency 450 Hz, 2.1 kHz Amplifier requirements 50 - 200W Sensitivity (2.83V/1m)  85dB Harmonic distortion 2nd & 3rd harmonics (90dB, 1m) 0.5% 40Hz – 100kHz0.2% 200Hz – 2kHz0.1% 2kHz - 20kHz Maximum output (peak sound pressure level at 1m with pink noise) 111dB Impedance 4 Ω (min. 3.2 Ω) Weight 18.2 kg (40.1 lbs.) Dimensions (H x W x D)(with grille and terminal) 440 x 205 x 422 mm(17.3 x 8.1 x 16.6 in.) Dimensions (H x W x D)(with grille, terminal & plinth) *Warranty - 5 years (Drivers) - 2 years (Electronics)